摘要：
采用三维电极耦合光催化处理叶酸废水。通过溶胶-凝胶浸渍法制备了掺Fe改性TiO2负载活性炭颗粒电极（Fe-TiO2/AC），进行XRD、SEM和BET表征，并优化三维电极耦合光催化处理叶酸废水的运行参数。结果表明，Fe-TiO2/AC比TiO2/AC有更好的形貌结构和光催化活性。在Fe掺杂质量分数为0.4%，电流密度为0.6 mA/cm2，pH为5，曝气量为6 L/min的条件下，反应120 min后TOC去除率达到82.4%。反应符合二级动力学模型，在有机物降解过程中具有明显的光电协同增强作用。
关键词:
Fe掺杂,
二氧化钛,
光催化,
三维电解,
叶酸废水
Abstract:
Folic acid wastewater is treated by three-dimensional electrode coupling photocatalysis. A Fe-doped TiO2supported activated carbon particle electrode Fe-TiO2/AC is prepared by sol-gel method, and then characterized by XRD, SEM and BET. The operating parameters of three-dimensional electrode coupling photocatalysis are optimized for the folic acid wastewater treatment. The results show that Fe-TiO2/AC has better morphology and photocatalytic activity than TiO2/AC. Under the following conditions:doping amount in Fe of 0.4%, the current density of 0.6 mA/cm2, pH of 5, and aeration of 6 L/min, the TOC removal reaches 82.4% after 120 minutes of reaction. The reaction confirms to the second-order kinetic model and has obvious photoelectric synergistic enhancement effect in the degradation process of organic matter.
Key words:
iron doping,
titanium dioxide,
photocatalysis,
three-dimensional electrolysis,
folic acid wastewater
中图分类号:
周俊我,高永,周桢,李婷婷,孙楚,刘宇轩,梅蓉. 活性炭颗粒负载Fe-TiO2光电协同处理叶酸废水[J]. 工业水处理, 2020, 40(4): 39-43.
Junwo Zhou,Yong Gao,Zhen Zhou,Tingting Li,Chu Sun,Yuxuan Liu,Rong Mei. The treatment of folic acid wastewater by photoelectric synergistic treatment with activated carbon particle loaded with Fe-TiO2[J]. Industrial Water Treatment, 2020, 40(4): 39-43.